Fatal error

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This is a fatal error indicating that the safe function of the operating system is no longer guaranteed. It typically arises from critical issues such as a checksum error in the system Flash memory or a RAM error, compromising the CPU's core operations. This error demands immediate attention as the system will not operate reliably, potentially leading to unpredictable behavior or complete system failure.

• Critical operating system failure impacting safe function.
• Core system process has terminated unexpectedly.
• Hardware malfunction preventing safe state verification.

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1. 1

   Verify controller power supply voltage at terminal L1 and N is within specification (e.g., 24VDC).

2. 2

   Inspect internal controller heatsink for debris or obstruction.

3. 3

   Perform a full controller reboot by cycling power off for 60 seconds, then on.

4. 4

   Check diagnostic logs for preceding error codes prior to this fatal error.